Essay On Peripheral Neuropathies

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peripheral neuropathies (14).
On current 1.5T scanners (GE machine), 2D (dimensional) imaging can be performed with near-similar resolution as on
3T scanners; however, 3D imaging is often limited, especially if smaller voxels are used or fat suppression is applied. On the other hand, if there is metal in the field-of-view, in order to mitigate susceptibility artifacts and for superior nerve visualization,
1.5T imaging is often favored. 2D pulse sequences include high resolution (base resolution 256 or higher, in plane resolution 0.3–0.4 mm) T1-weighted and fat suppressed T2w images (16).
Suprascapular neuropathy is difficult and challenging diagnosis for clinicians because of symptoms overlapping with a number of other regional conditions.
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The abnormal nerve may also show one or more of the following findings: abnormally increased SI, heterogeneous
SI, focal or diffuse nerve enlargement, enlargement and effacement due to different degrees of edema, and fascicular disruption with intraneural and/or perineural fibrosis (22,23).
Denervation changes of muscle can have several MRI appearances. In the subacute phase the affected muscle demonstrates increased T2-signal resulting from muscle edema. In the chronic stages, fatty infiltration usually accompanied by muscle atrophy represents irreversible muscle injury (24).
Our study includes 30 patients complaining of shoulder pain and 10 healthy volunteers as control group, and the cause of nerve injury in our series includes the direct trauma and repetitive activities which led to overuse of the upper limb in the athletic ones.
In the current study 12 cases showed decreased bulk and fatty infiltration of the supra and infra spinatus muscles and the supraspinatus was more affected than the infraspinatus.
Unlike the study of Po¨ yhia¨ et al. in 2005 (25) that diffuse atrophy of the supra & infra spinatus muscles with more affection of the infraspinatus muscle (62% and 70%) respectively, since the infraspinatus muscle is innervated by a higher nerve branch of the brachial plexus since denervation generally causes severe atrophy of the infraspinatus muscle and not the supras
Nearly the same results as ours
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